Electricity and Light: Reflection and Refraction are the two most important Physics chapters for CET Delhi Polytechnic 2026, together accounting for an expected 30–36% of Physics section marks based on previous year trends.
CET Delhi Polytechnic 2026 tests Physics entirely from the Class 10 NCERT/CBSE Science curriculum. Knowing chapter-wise weightage helps you allocate study time smartly and score higher in the Physics section. This guide covers the expected marks distribution across all 10 Physics chapters and the key topics to prioritise before the exam.
- Electricity and Light: Reflection and Refraction consistently carry the highest individual chapter weightage in Physics.
- All Physics questions are based on Class 10 NCERT Science — no Class 11 or 12 topics are included.
- Numerical problems from Motion, Electricity, and Work-Energy chapters appear in every paper.
- Chapters like Magnetic Effects of Electric Current and Force and Laws of Motion are heavily tested in conceptual MCQ format.
- The exam is conducted by the Training and Technical Education Department, Delhi.
| Direct Link to CET Delhi Polytechnic 2026 Official Website (Active) |
CET Delhi Polytechnic 2026 Physics Syllabus Overview
The Physics section of CET Delhi Polytechnic 2026 is drawn entirely from the Class 10 NCERT Science textbook. The exam covers Physics, Chemistry, and Mathematics, with Physics questions appearing as MCQs that test both conceptual understanding and numerical problem-solving. There are 10 major Physics chapters in the syllabus, and each chapter carries a different expected weightage based on previous year paper analysis.
| Parameter | Details |
|---|---|
| Syllabus Basis | Class 10 NCERT/CBSE Science |
| Total Physics Chapters | 10 |
| Question Type | Multiple Choice Questions (MCQs) |
| Conducting Body | Training and Technical Education Department, Delhi |
| Official Website | tte.delhi.gov.in |
Chapter-wise Weightage and Expected Marks
The table below shows expected chapter-wise weightage for Physics in CET Delhi Polytechnic 2026, based on analysis of previous year question papers. High-priority chapters should be covered first before moving to medium and lower-priority ones.
| Chapter | Expected Weightage | Priority Level |
|---|---|---|
| Electricity | 15–18% | High |
| Light: Reflection and Refraction | 15–18% | High |
| Motion | 10–12% | High |
| Magnetic Effects of Electric Current | 10–12% | High |
| Work, Energy and Power | 8–10% | Medium |
| Force and Laws of Motion | 8–10% | Medium |
| Gravitation | 7–9% | Medium |
| Human Eye and the Colourful World | 5–7% | Medium |
| Sound | 4–6% | Low-Medium |
| Sources of Energy | 3–5% | Low-Medium |
Weightage figures are based on previous year paper trends and are expected estimates for 2026. Actual distribution may vary.
High Weightage Physics Chapters: Key Topics
The four chapters below together account for roughly 50–60% of the Physics section based on previous year patterns. Master these before moving to other chapters.
1. Electricity (Expected Weightage: 15–18%)Electricity is consistently the highest-scoring chapter. Most questions are numerical problems based on Ohm’s Law, resistance combinations, and power calculations. Practise all NCERT in-text and exercise numericals.
- Ohm’s Law and its applications
- Resistance in series and parallel combinations
- Electric power: P = VI = I²R = V²/R
- Joule’s Law of heating
- Domestic electric circuits and safety devices (fuse, MCB)
- Factors affecting resistance of a conductor
This chapter tests both formula-based numericals and conceptual MCQs. The mirror formula and lens formula are the most frequently tested equations — memorise them and practise sign convention carefully.
- Laws of reflection and refraction
- Mirror formula: 1/v + 1/u = 1/f and magnification
- Lens formula and power of a lens: P = 1/f
- Refractive index and Snell’s Law
- Total internal reflection
- Image formation by concave and convex mirrors and lenses
Motion builds the foundation of mechanics. Equations of motion and distance-time or velocity-time graphs are the most frequently tested concepts in this chapter.
- Distance vs displacement; speed vs velocity
- Uniform and non-uniform motion
- Three equations of motion: v = u + at; s = ut + ½at²; v² = u² + 2as
- Graphical representation of motion
- Uniform circular motion
Conceptual MCQs dominate this chapter. Focus on Fleming’s rules and the working principles of electric motors and generators, as these are the most repeated topics.
- Magnetic field lines and their properties
- Right-hand thumb rule
- Force on a current-carrying conductor in a magnetic field
- Fleming’s Left-Hand Rule and Right-Hand Rule
- Working principle of electric motor and AC generator
- Electromagnetic induction
Medium Weightage Chapters to Cover
After completing high-priority chapters, cover these medium-weightage topics. Together they contribute around 32–41% of Physics marks based on expected trends.
| Chapter | Key Topics to Focus On |
|---|---|
| Work, Energy and Power | Work-energy theorem, kinetic and potential energy, law of conservation of energy, power = work/time |
| Force and Laws of Motion | Newton’s three laws, inertia, momentum (p = mv), impulse, action-reaction pairs, conservation of momentum |
| Gravitation | Universal law of gravitation, value of g, free fall, weight vs mass, Kepler’s laws of planetary motion |
| Human Eye and the Colourful World | Defects of vision and correction (myopia, hypermetropia, presbyopia), dispersion of light, atmospheric refraction, scattering of light (Tyndall effect) |
| Sound | Nature and propagation of sound, speed in different media, reflection of sound, echo, SONAR, human range of hearing, ultrasound applications |
| Sources of Energy | Conventional vs non-conventional sources, solar panels, wind energy, hydropower, nuclear fission and fusion, fossil fuels and their limitations |
Preparation Tips for CET Delhi Polytechnic Physics 2026
Use these targeted strategies to maximise your Physics score in CET Delhi Polytechnic 2026.
- Begin with NCERT Class 10 Science — every Physics question comes from this textbook. Read all chapters, solved examples, and in-text questions thoroughly.
- Practise numericals daily from Electricity, Light, and Motion — these three chapters alone can earn you over 40% of your Physics marks based on expected trends.
- Create a formula sheet covering Ohm’s Law, mirror and lens formulas, equations of motion, power formulas, and Newton’s laws — revise it every morning.
- Solve previous year CET Delhi Polytechnic papers — they reveal the actual question distribution and show which topics repeat most frequently across years.
- Use diagrams for conceptual chapters — drawing ray diagrams for Light and field-line diagrams for Magnetic Effects improves both understanding and retention.
- Do not skip Sources of Energy and Sound — theory-based MCQs from these chapters are quick to attempt and straightforward, making them easy score boosters.
- Revise SI units for all physical quantities — unit-identification MCQs appear in almost every CET Delhi Polytechnic Physics section.
CET Delhi Polytechnic 2026 Physics FAQs
Ques. Which is the most important Physics chapter for CET Delhi Polytechnic 2026?
Ans. Based on previous year trends, Electricity and Light: Reflection and Refraction are the most important chapters, each with an expected weightage of 15–18%. These two chapters together can contribute nearly one-third of your total Physics marks.
Ques. Is the Physics syllabus for CET Delhi Polytechnic based on Class 10 or Class 12?
Ans. The Physics syllabus for CET Delhi Polytechnic is entirely based on Class 10 NCERT/CBSE Science. No Class 11 or Class 12 topics are part of the exam.
Ques. Are numerical problems important in CET Delhi Polytechnic Physics?
Ans. Yes, numerical problems are very important. Chapters like Electricity, Light (mirror/lens formula), Motion (equations of motion), and Work, Energy and Power regularly feature calculation-based MCQs. Practising all NCERT in-text and exercise numericals is essential.
Ques. Which Physics chapters can be revised quickly before the exam?
Ans. Sources of Energy and Sound are theory-heavy chapters with few formulas and can be covered quickly. Human Eye and the Colourful World is also relatively concise. Revise these after completing high-weightage chapters.
Ques. How should I divide study time between Physics chapters for CET Delhi Polytechnic 2026?
Ans. Spend roughly 50–55% of your Physics study time on the four high-priority chapters — Electricity, Light, Motion, and Magnetic Effects. Allocate 30–35% to medium-weightage chapters (Work-Energy, Force, Gravitation, Human Eye) and the remaining time on Sound and Sources of Energy. This distribution aligns with expected marks based on previous year paper trends.
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